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  • WCF 4: Fileless Activation Fails On XP (IIS 5) that has SSL port enabled.

    - by Richard Collette
    I have a service being hosted in IIS on XP via fileless activation. The service starts fine when there is no SSL port enabled for IIS but when the SSL port is enabled, I get the error message: System.ServiceModel.ServiceActivationException: The service '/SkillsPrototype.Web/services/Linkage.svc' cannot be activated due to an exception during compilation. The exception message is: A binding instance has already been associated to listen URI 'http://rcollet.hsb-corp.hsb.com/SkillsPrototype.Web/Services/Linkage.svc'. If two endpoints want to share the same ListenUri, they must also share the same binding object instance. The two conflicting endpoints were either specified in AddServiceEndpoint() calls, in a config file, or a combination of AddServiceEndpoint() and config. . ---> System.InvalidOperationException: A binding instance has already been associated to listen URI 'http://rcollet.hsb-corp.hsb.com/SkillsPrototype.Web/Services/Linkage.svc'. If two endpoints want to share the same ListenUri, they must also share the same binding object instance. The two conflicting endpoints were either specified in AddServiceEndpoint() calls, in a config file, or a combination of AddServiceEndpoint() and config. My service model configuration is <system.serviceModel> <diagnostics wmiProviderEnabled="true"> <messageLogging logEntireMessage="true" logMalformedMessages="true" logMessagesAtServiceLevel="true" logMessagesAtTransportLevel="true" maxMessagesToLog="3000"/> </diagnostics> <standardEndpoints> <webHttpEndpoint> <standardEndpoint name="" helpEnabled="true" automaticFormatSelectionEnabled="true" /> </webHttpEndpoint> </standardEndpoints> <behaviors> <serviceBehaviors> <behavior> <serviceMetadata httpGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="true" /> </behavior> </serviceBehaviors> </behaviors> <bindings> <webHttpBinding> <binding> <security mode="None"> <transport clientCredentialType="None"/> </security> </binding> </webHttpBinding> </bindings> <protocolMapping> </protocolMapping> <services> </services> <serviceHostingEnvironment multipleSiteBindingsEnabled="false"> <serviceActivations> <clear/> <add factory="System.ServiceModel.Activation.WebScriptServiceHostFactory" service="SkillsPrototype.ServiceModel.Linkage" relativeAddress="~/Services/Linkage.svc"/> </serviceActivations> </serviceHostingEnvironment> </system.serviceModel> When you look in the svclog file, there two base addresses that are returned when SSL is enabled, one for http and one for https. I suspect that this is part of the issue but I am not sure how to resolve it. <E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> <EventID>524333</EventID> <Type>3</Type> <SubType Name="Information">0</SubType> <Level>8</Level> <TimeCreated SystemTime="2010-06-16T17:40:55.8168605Z" /> <Source Name="System.ServiceModel" /> <Correlation ActivityID="{95927f9a-fa90-46f4-af8b-721322a87aaa}" /> <Execution ProcessName="aspnet_wp" ProcessID="1888" ThreadID="5" /> <Channel/> <Computer>RCOLLET</Computer> </System> <ApplicationData> <TraceData> <DataItem> <TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" Severity="Information"> <TraceIdentifier>http://msdn.microsoft.com/en-US/library/System.ServiceModel.ServiceHostBaseAddresses.aspx</TraceIdentifier> <Description>ServiceHost base addresses.</Description> <AppDomain>/LM/w3svc/1/ROOT/SkillsPrototype.Web-1-129211836532542949</AppDomain> <Source>System.ServiceModel.WebScriptServiceHost/49153359</Source> <ExtendedData xmlns="http://schemas.microsoft.com/2006/08/ServiceModel/CollectionTraceRecord"> <BaseAddresses> <Address>http://rcollet.hsb-corp.hsb.com/SkillsPrototype.Web/Services/Linkage.svc</Address> <Address>https://rcollet.hsb-corp.hsb.com/SkillsPrototype.Web/Services/Linkage.svc</Address> </BaseAddresses> </ExtendedData> </TraceRecord> </DataItem> </TraceData> </ApplicationData> </E2ETraceEvent> I can't post the full service log due to character limits on the post.

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  • Edit my message before posting in Twitter with Twitter API and PHP

    - by novellino
    I am having a site and I want to add a button in my site that will link to the twitter login page and after login it will post a message to the Twitter home page of the user. I used this code: http://www.matpal.com/2010/12/oauth-access-token-in-twitter-api.html and it works fine. My problem is that before posting the message I want to be able to edit it. So after login I want to see my message in an editing input (like retween do,here: http://www.mobilemarketer.com/cms/news/search/10263.html ) and post it after clicking Tweet. Does anyone know how can I do this? Thanks in advance

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  • jQuery returning two elements for each one it finds?

    - by John Rudy
    I'll start by saying I'm fairly new to jQuery. For the most part, I've found it intuitive and powerful, but this one circumstance has me thoroughly stumped. In the following method, the call to .each() returns two elements for every one found. It iterates over a set of table rows given IDs starting with the word, "communication," and followed by an ID number. For each row it returns, it processes twice. Using Firebug, I've validated that the DOM only has a single instance of each table row in question. Also using Firebug, I've validated that the method is not being called twice; the iteration in .each() is truly going over each returned table row twice. By the time all the AJAX call goodness is done, I'll have two entries in the database for each row created in the table. This is the code that's causing the issues: function getCommunications() { var list = $('[id^=communication]'); var communications = new Array(); list.each(function () { var communication = { ID: $(this).find('.commCompanyID').val(), /* * SNIP: more object properties here that are * unnecessary to this discussion */ }; communications.push(communication); }); return communications; } At the point of return communications, the Array returned will contain twice as many elements as there are table rows. I should note that nearly identical code (but going against specific lists of divs) is working on the same page. It's just the table that's suffering the issues. I'm using jQuery 1.4.1, the version which shipped with Visual Studio .NET 2010. The table markup is fully dynamic -- that is, aside from the header row, it's dependent on data either returned at page load or created by the user via a dialog box. I'll drop in just the code for what's created at page load; again using Firebug I've validated that what I create dynamically when an end user creates a row with the dialog box matches. (This should be readable by anyone, but for the record this is an ASP.NET MVC 2.0 project.) <table id="commTable"> <tr> <th></th> <th> Date / Time </th> <th> Contact </th> <th> Type </th> <th> Duration </th> <th> Notes </th> </tr> <% foreach (var item in Model) { %> <tr id="communication<%: item.ID %>"> <td> <a href="#" onclick="showEditCommunicationForm(<%: item.ID %>"> Edit</a> <span class="commDeleteButton"> <a href="#" onclick="deleteCommunication(<%: item.ID %>)"> Delete</a> </span> </td> <td> <span class="commDateTime"><%: item.DateTime %></span> <input type="hidden" class="commID" value="<%: item.ID %>" /> <input type="hidden" class="commIsDeleted" value="<%: item.IsDeleted %>" /> </td> <td> <span class="commSourceText"><%: item.Company.CompanyName %></span> <input type="hidden" class="commCompanyID" value="<%: item.CompanyID %>" /> </td> <td> <%: item.CommunicationType.CommunicationTypeText %> <input type="hidden" class="commTypeID" value="<%: item.CommunicationTypeID %>" /> </td> <td> <span class="commDuration"><%: item.DurationMinutes %></span> Minutes </td> <td> <span class="commNotes"><%: item.Notes %></span> </td> </tr> <% } %> </table>

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  • "Invalid signature": oAuth provider with Django-piston

    - by Martin Eve
    Hi, I'm working with django-piston to attempt to create an API that supports oAuth. I started out using the tutorial at: http://blog.carduner.net/2010/01/26/django-piston-and-oauth/ I added a consumer to piston's admin interface with key and secret both set to "abcd" for test purposes. The urls are successfully wired-up and the oAuth provider is called. However, running my get request token tests with tripit (python get_request_token.py "http://127.0.0.1:8000/api" abcd abcd), I receive the following error: Invalid signature. Expected signature base string: GET&http%3A%2F%2F127.0.0.1%3A8000%2Fapi%2Foauth%2Frequest_token%2F&oauth_consumer_key%3Dabcd%26oauth_nonce%3D0c0bdded5b1afb8eddf94f7ccc672658%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1275135410%26oauth_version%3D1.0 The problem seems to lie inside the _check_signature method of Piston's oauth.py, where valid_sig = signature_method.check_signature(oauth_request, consumer, token, signature) is returning false. I can't, however, work out how to get the signature validated. Any ideas? -----Update----- If I remove the test consumer from piston's backend, the response returned is correctly set to "Invalid consumer", so this lookup appears to be working.

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  • Why is Read-Modify-Write necessary for registers on embedded systems?

    - by Adam Shiemke
    I was reading http://embeddedgurus.com/embedded-bridge/2010/03/different-bit-types-in-different-registers/, which said: With read/write bits, firmware sets and clears bits when needed. It typically first reads the register, modifies the desired bit, then writes the modified value back out and I have run into that consrtuct while maintaining some production code coded by old salt embedded guys here. I don't understand why this is necessary. When I want to set/clear a bit, I always just or/nand with a bitmask. To my mind, this solves any threadsafe problems, since I assume setting (either by assignment or oring with a mask) a register only takes one cycle. On the other hand, if you first read the register, then modify, then write, an interrupt happening between the read and write may result in writing an old value to the register. So why read-modify-write? Is it still necessary?

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  • how to get individual(s) for given class/individual with given object property using SPARQL

    - by udayalkonline
    hi, I have simple ontology called "campus.owl".There is a class called"Lecturer" and which has two sub classes ,RegularLecturer and VisitingLecturer.There is a another class called "Student" which is a sibling class of Lecturer class. I have created individuals for all the classes. Student class is joind with Lecture class with "has" object property. problem I want to get some Lecturer/VisitingLecturer individuals for given student individual. Could you please help me to get this result! Thanks in advance! PREFIX rdfs: http://www.w3.org/2000/01/rdf-schema# PREFIX rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# PREFIX my: http://www.semanticweb.org/ontologies/2010/5/Ontology1275975684120.owl# SELECT ?lec WHERE { ?lec..........??? } any idea..?? Thank in advance!

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  • Why wont this sort in Solr work?

    - by Camran
    I need to sort on a date-field type, which name is "mod_date". It works like this in the browser adress-bar: http://localhost:8983/solr/select/?&q=bmw&sort=mod_date+desc But I am using a phpSolr client which sends an URL to Solr, and the url sent is this: fq=+category%3A%22Bilar%22+%2B+car_action%3AS%C3%A4ljes&version=1.2&wt=json&json.nl=map&q=%2A%3A%2A&start=0&rows=5&sort=mod_date+desc // This wont work and is echoed after this in php: $queryString = http_build_query($params, null, $this->_queryStringDelimiter); $queryString = preg_replace('/%5B(?:[0-9]|[1-9][0-9]+)%5D=/', '=', $queryString); This wont work, I dont know why! Everything else works fine, all right fields are returned. But the sort doesn't work. Any ideas? Thanks BTW: The field "mod_date" contains something like: 2010-03-04T19:37:22.5Z EDIT: First I use PHP to send this to a SolrPhpClient which is another php-file called service.php: require_once('../SolrPhpClient/Apache/Solr/Service.php'); $solr = new Apache_Solr_Service('localhost', 8983, '/solr/'); $results = $solr->search($querystring, $p, $limit, $solr_params); $solr_params is an array which contains the solr-parameters (q, fq, etc). Now, in service.php: $params['version'] = self::SOLR_VERSION; // common parameters in this interface $params['wt'] = self::SOLR_WRITER; $params['json.nl'] = $this->_namedListTreatment; $params['q'] = $query; $params['sort'] = 'mod_date desc'; // HERE IS THE SORT I HAVE PROBLEM WITH $params['start'] = $offset; $params['rows'] = $limit; $queryString = http_build_query($params, null, $this->_queryStringDelimiter); $queryString = preg_replace('/%5B(?:[0-9]|[1-9][0-9]+)%5D=/', '=', $queryString); if ($method == self::METHOD_GET) { return $this->_sendRawGet($this->_searchUrl . $this->_queryDelimiter . $queryString); } else if ($method == self::METHOD_POST) { return $this->_sendRawPost($this->_searchUrl, $queryString, FALSE, 'application/x-www-form-urlencoded'); } The $results contain the results from Solr... So this is the way I need to get to work (via php). This code below (also on top of this Q) works but thats because I paste it into the adress bar manually, not via the PHPclient. But thats just for debugging, I need to get it to work via the PHPclient: http://localhost:8983/solr/select/?&q=bmw&sort=mod_date+des // Not via phpclient, but works UPDATE (2010-03-08): I have tried Donovans codes (the urls) and they work fine. Now, I have noticed that it is one of the parameters causing the 'SORT' not to work. This parameter is the "wt" parameter. If we take the url from top of this Q, (fq=+category%3A%22Bilar%22+%2B+car_action%3AS%C3%A4ljes&version=1.2&wt=json&json.nl=map&q=%2A%3A%2A&start=0&rows=5&sort=mod_date+desc), and just simply remove the "wt" parameter, then the sort works. BUT the results appear differently, thus making my php code not able to recognize the results I believe. Donovan would know this I think. I am guessing in order for the PHPClient to work, the results must be in a specific structure, which gets messed up as soon as I remove the wt parameter. Donovan, help me please... Here is some background what I use your SolrPhpClient for: I have a classifieds website, which uses MySql. But for the searching I am using Solr to search some indexed fields. Then Solr returns an array of ID:numbers (for all matches of the search criteria). Then I use those ID:numbers to find everything in a MySql db and fetch all other information (example is not searchable information). So simplified: Search - Solr returns all matches in an array of ID:nrs - Id:numbers from Solr are the same as the Id numbers in the MySql db, so I can just make a simple match agains every record with the ID matching the ID from the Solr results array. I don't use Faceting, no boosting, no relevancy or other fancy stuff. I only sort by the latest classified put, and give the option to users to also sort on the cheapest price. Nothing more. Then I use the "fq" parameter to do queries on different fields in Solr depending on category chosen by users (example "cars" in this case which in my language is "Bilar"). I am really stuck with this problem here... Thanks for all help

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  • 'e-Commerce' scalable database model

    - by Ruben Trancoso
    I would like to understand database scalability so I've just heard a talk about Habits of Highly Scalable Web Applications http://techportal.ibuildings.com/2010/03/02/habits-of-highly-scalable-web-applications/ On it, the presenter mainly talk about relational database scalability. I also have read something about MapReduce and Column oriented tables, big tables, hypertable etc... trying to understand which are the most up to date methods to scale web application data. But the second group, to me, is being hard to understand where it fits. It serves as transactional, reliable data store? or not, its just for large access and processing and to handle fine graned operations we will ever need to rely on RDBMSs? Could someone give a comprehensive landscape for those new technologies and how to use it?

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  • PHP Fatal error, trying to request method inside model multiple times

    - by Tom
    The error message [23-Mar-2010 08:36:16] PHP Fatal error: Cannot redeclare humanize() (previously declared in /Users/tmclssns/Sites/nadar/nadar/trunk/webapp/application/filer/models/Filer/Aggregate.php:133) in /Users/tmclssns/Sites/nadar/nadar/trunk/webapp/application/filer/models/Filer/Aggregate.php on line 133 I have a "Filer" model which contains several methods to generate graphs. Each method in there related to generating graphs has the suffix "Graph" in the method name. As we have some performance issues, I try to render the graphs in advance (using cron) instead of rendering them on each request. The code below is what I came up with: public function generategraphsAction() { $this->_helper->viewRenderer->setNoRender(); $config = Zend_Registry::get('config'); $id = $this->_getParam('filerid'); $filer = new Filer($id); $filer_methods = get_class_methods($filer); foreach ($filer_methods as $filer_method) { if (preg_match('/^(.*)Graph$/i', $filer_method, $matches)) { $path = $config->imaging_caching_dir . "/$id/{$matches[1]}.png"; $filer->$matches[0]($path); } } // var_dump(get_class_methods($filer)); die; } The result from the var_dump(), when uncommented, is: array 0 => string '__construct' (length=11) 1 => string 'find_by_name' (length=12) 2 => string 'getPartner' (length=10) 3 => string 'getSlots' (length=8) 4 => string 'getGroups' (length=9) 5 => string 'grouplist' (length=9) 6 => string 'getAggregates' (length=13) 7 => string 'getVolumes' (length=10) 8 => string 'getAggregateVolumes' (length=19) 9 => string 'getShelves' (length=10) 10 => string 'getAutoSupportHistory' (length=21) 11 => string 'getAutoSupportMail' (length=18) 12 => string 'getOrphans' (length=10) 13 => string 'getAll' (length=6) 14 => string 'getDiskRevOverview' (length=18) 15 => string 'getDiskTypeOverview' (length=19) 16 => string 'getDiskTypeSizeFunctionOverview' (length=31) 17 => string 'getLicenses' (length=11) 18 => string 'removeGroup' (length=11) 19 => string 'addGroup' (length=8) 20 => string 'hasGroup' (length=8) 21 => string 'aggdefaultGraph' (length=15) 22 => string 'aggbarGraph' (length=11) 23 => string 'voldefaultGraph' (length=15) 24 => string 'volbarGraph' (length=11) 25 => string 'replicationGraph' (length=16) 26 => string 'getReplicationData' (length=18) 27 => string 'humanize' (length=8) 28 => string 'getFiler' (length=8) 29 => string 'getOptions' (length=10) 30 => string 'getCifsInfo' (length=11) 31 => string 'getCifsStats' (length=12) 32 => string '__get' (length=5) 33 => string 'tr' (length=2) 34 => string 'trs' (length=3) 35 => string 'fieldList' (length=9) The generategraphsAction() method finds the 'Graph' methods correctly: array 0 => string 'aggdefaultGraph' (length=15) 1 => string 'aggdefault' (length=10) array 0 => string 'aggbarGraph' (length=11) 1 => string 'aggbar' (length=6) array 0 => string 'voldefaultGraph' (length=15) 1 => string 'voldefault' (length=10) array 0 => string 'volbarGraph' (length=11) 1 => string 'volbar' (length=6) array 0 => string 'replicationGraph' (length=16) 1 => string 'replication' (length=11) However when the first graph is generated, it generates the above listed PHP fatal error. Anyone can come up with a solution to this? I tried to pass by reference or switch a few things around (like re declare the Filer model, $current_filer = new Filer($id); and unset() it again after the request, but resulted in the same error) without much success. The referenced method "humanize" isn't used for anything I'm doing at the moment, but belongs to the Model because it's used in several other places. Of course, removing the method is not really an option right now, and the model contains several other methods as well so I assume if I just move the humanize method around, it will generate an error on the next one. For reference, the humanize() method: public function humanize ($kbytes, $unit = null) { // KiloByte, Megabyte, GigaByte, TeraByte, PetaByte, ExaByte, ZettaByte, YottaByte $units = array('KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'); if (null !== $units) { $i = array_search(substr($unit, -2), $units); if (! $i) { $i = floor((strlen($kbytes) - 1) / 3); } } else { $i = floor((strlen($kbytes) - 1) / 3); } $newSize = round($kbytes / pow(1024, $i), 2); return $newSize . $units[$i]; } Thanks in advance for the help offered.

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  • jQuery UI datepicker options as varialbe

    - by Desmond Liang
    I have a number of inputs on a page function as JQ UI datepicker. Each needs to have different settings. I want to minimize the JS so I save the settings as an attribute in each individual . <input type="text" class="datepicker" name="dateofbirth" id="dateofbirth" size="20" value="" options="{ dateFormat: 'yy-mm-dd',changeYear: true,yearRange: '1920:2010'}" /> <input type="text" class="datepicker" name="expdate" id="expdate" size="20" value="" options="{ yearRange: '2011:2020'}" /> I use js to load the options dynamically as the settings. $(document).ready(function(){ $(".datepicker").each(function(index){ $(this).datepicker("option" , $(this).attr('options')); }); }); datepicker is not functioning. If I empty the parentheses after $this.datepicker it works fine. I have also tried another way to assign settings. ("option",...) no dice.

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  • current_date casting

    - by Armen Mkrtchyan
    Hi. string selectSql = "update " + table + " set state_" + mode + "_id=1 WHERE stoping_" + mode + " < current_date;"; when i call current_date, it return yyyy-MM-dd format, but i want to return dd.MM.yyyy format, how can i do that. please help. my program works fine when i am trying string selectSql = "update " + table + " set state_" + mode + "_id=1 WHERE stoping_" + mode + " < '16.04.2010';";

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  • Site hosted with Blogger has some display problems in IE

    - by dafactopedia
    Hello guys..My site url is : Da Factopedia It opens up perfectly in all browsers Firefox, Opera, Safari, Chrome. Even in IE 8 the Home page is perfectly displayed . But if you click on any post page like this one : http://www.dafactopedia.com/2010/03/7-surprising-facts-about-sleep.html the right sidebar starts acting up. It starts floating within the main post area and I have no clue why this happens. Here is the template xml code in a txt file : http://www.opendrive.com/files/6244724_nPpSE_bf53/template.txt in xml format : http://www.opendrive.com/files/6244723_40eAI_3e95/template-6257961483006208180(4).xml

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  • changing output in objective-c app

    - by Zack
    // // RC4.m // Play5 // // Created by svp on 24.05.10. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import "RC4.h" @implementation RC4 @synthesize txtLyrics; @synthesize sbox; @synthesize mykey; - (IBAction) clicked: (id) sender { NSData *asciidata1 = [@"4875" dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *asciistr1 = [[NSString alloc] initWithData:asciidata1 encoding:NSASCIIStringEncoding]; //[txtLyrics setText:@"go"]; NSData *asciidata = [@"sdf883jsdf22" dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *asciistr = [[NSString alloc] initWithData:asciidata encoding:NSASCIIStringEncoding]; //RC4 * x = [RC4 alloc]; [txtLyrics setText:[self decrypt:asciistr1 andKey:asciistr]]; } - (NSMutableArray*) hexToChars: (NSString*) hex { NSMutableArray * arr = [[NSMutableArray alloc] init]; NSRange range; range.length = 2; for (int i = 0; i < [hex length]; i = i + 2) { range.location = 0; NSString * str = [[hex substringWithRange:range] uppercaseString]; unsigned int value; [[NSScanner scannerWithString:str] scanHexInt:&value]; [arr addObject:[[NSNumber alloc] initWithInt:(int)value]]; } return arr; } - (NSString*) charsToStr: (NSMutableArray*) chars { NSString * str = @""; for (int i = 0; i < [chars count]; i++) { str = [NSString stringWithFormat:@"%@%@",[NSString stringWithFormat:@"%c", [chars objectAtIndex:i]],str]; } return str; } //perfect except memory leaks - (NSMutableArray*) strToChars: (NSString*) str { NSData *asciidata = [str dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *asciistr = [[NSString alloc] initWithData:asciidata encoding:NSASCIIStringEncoding]; NSMutableArray * arr = [[NSMutableArray alloc] init]; for (int i = 0; i < [str length]; i++) { [arr addObject:[[NSNumber alloc] initWithInt:(int)[asciistr characterAtIndex:i]]]; } return arr; } - (void) initialize: (NSMutableArray*) pwd { sbox = [[NSMutableArray alloc] init]; mykey = [[NSMutableArray alloc] init]; int a = 0; int b; int c = [pwd count]; int d = 0; while (d < 256) { [mykey addObject:[pwd objectAtIndex:(d % c)]]; [sbox addObject:[[NSNumber alloc] initWithInt:d]]; d++; } d = 0; while (d < 256) { a = (a + [[sbox objectAtIndex:d] intValue] + [[mykey objectAtIndex:d] intValue]) % 256; b = [[sbox objectAtIndex:d] intValue]; [sbox replaceObjectAtIndex:d withObject:[sbox objectAtIndex:a]]; [sbox replaceObjectAtIndex:a withObject:[[NSNumber alloc] initWithInt:b]]; d++; } } - (NSMutableArray*) calculate: (NSMutableArray*) plaintxt andPsw: (NSMutableArray*) psw { [self initialize:psw]; int a = 0; int b = 0; NSMutableArray * c = [[NSMutableArray alloc] init]; int d; int e; int f; int g = 0; while (g < [plaintxt count]) { a = (a + 1) % 256; b = (b + [[sbox objectAtIndex:a] intValue]) % 256; e = [[sbox objectAtIndex:a] intValue]; [sbox replaceObjectAtIndex:a withObject:[sbox objectAtIndex:b]]; [sbox replaceObjectAtIndex:b withObject:[[NSNumber alloc] initWithInt:e]]; int h = ([[sbox objectAtIndex:a]intValue] + [[sbox objectAtIndex:b]intValue]) % 256; d = [[sbox objectAtIndex:h] intValue]; f = [[plaintxt objectAtIndex:g] intValue] ^ d; [c addObject:[[NSNumber alloc] initWithInt:f]]; g++; } return c; } - (NSString*) decrypt: (NSString*) src andKey: (NSString*) key { NSMutableArray * plaintxt = [self hexToChars:src]; NSMutableArray * psw = [self strToChars:key]; NSMutableArray * chars = [self calculate:plaintxt andPsw:psw]; NSData *asciidata = [[self charsToStr:chars] dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *asciistr = [[NSString alloc] initWithData:asciidata encoding:NSUTF8StringEncoding]; return asciistr; } @end This is supposed to decrypt a hex string with an ascii string, using rc4 decryption. I'm converting my java application to objective-c. The output keeps changing, every time i run it.

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  • .NET Code Evolution

    - by Alois Kraus
    Originally posted on: http://geekswithblogs.net/akraus1/archive/2013/07/24/153504.aspxAt my day job I do look at a lot of code written by other people. Most of the code is quite good and some is even a masterpiece. And there is also code which makes you think WTF… oh it was written by me. Hm not so bad after all. There are many excuses reasons for bad code. Most often it is time pressure followed by not enough ambition (who cares) or insufficient training. Normally I do care about code quality quite a lot which makes me a (perceived) slow worker who does write many tests and refines the code quite a lot because of the design deficiencies. Most of the deficiencies I do find by putting my design under stress while checking for invariants. It does also help a lot to step into the code with a debugger (sometimes also Windbg). I do this much more often when my tests are red. That way I do get a much better understanding what my code really does and not what I think it should be doing. This time I do want to show you how code can evolve over the years with different .NET Framework versions. Once there was  time where .NET 1.1 was new and many C++ programmers did switch over to get rid of not initialized pointers and memory leaks. There were also nice new data structures available such as the Hashtable which is fast lookup table with O(1) time complexity. All was good and much code was written since then. At 2005 a new version of the .NET Framework did arrive which did bring many new things like generics and new data structures. The “old” fashioned way of Hashtable were coming to an end and everyone used the new Dictionary<xx,xx> type instead which was type safe and faster because the object to type conversion (aka boxing) was no longer necessary. I think 95% of all Hashtables and dictionaries use string as key. Often it is convenient to ignore casing to make it easy to look up values which the user did enter. An often followed route is to convert the string to upper case before putting it into the Hashtable. Hashtable Table = new Hashtable(); void Add(string key, string value) { Table.Add(key.ToUpper(), value); } This is valid and working code but it has problems. First we can pass to the Hashtable a custom IEqualityComparer to do the string matching case insensitive. Second we can switch over to the now also old Dictionary type to become a little faster and we can keep the the original keys (not upper cased) in the dictionary. Dictionary<string, string> DictTable = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase); void AddDict(string key, string value) { DictTable.Add(key, value); } Many people do not user the other ctors of Dictionary because they do shy away from the overhead of writing their own comparer. They do not know that .NET has for strings already predefined comparers at hand which you can directly use. Today in the many core area we do use threads all over the place. Sometimes things break in subtle ways but most of the time it is sufficient to place a lock around the offender. Threading has become so mainstream that it may sound weird that in the year 2000 some guy got a huge incentive for the idea to reduce the time to process calibration data from 12 hours to 6 hours by using two threads on a dual core machine. Threading does make it easy to become faster at the expense of correctness. Correct and scalable multithreading can be arbitrarily hard to achieve depending on the problem you are trying to solve. Lets suppose we want to process millions of items with two threads and count the processed items processed by all threads. A typical beginners code might look like this: int Counter; void IJustLearnedToUseThreads() { var t1 = new Thread(ThreadWorkMethod); t1.Start(); var t2 = new Thread(ThreadWorkMethod); t2.Start(); t1.Join(); t2.Join(); if (Counter != 2 * Increments) throw new Exception("Hmm " + Counter + " != " + 2 * Increments); } const int Increments = 10 * 1000 * 1000; void ThreadWorkMethod() { for (int i = 0; i < Increments; i++) { Counter++; } } It does throw an exception with the message e.g. “Hmm 10.222.287 != 20.000.000” and does never finish. The code does fail because the assumption that Counter++ is an atomic operation is wrong. The ++ operator is just a shortcut for Counter = Counter + 1 This does involve reading the counter from a memory location into the CPU, incrementing value on the CPU and writing the new value back to the memory location. When we do look at the generated assembly code we will see only inc dword ptr [ecx+10h] which is only one instruction. Yes it is one instruction but it is not atomic. All modern CPUs have several layers of caches (L1,L2,L3) which try to hide the fact how slow actual main memory accesses are. Since cache is just another word for redundant copy it can happen that one CPU does read a value from main memory into the cache, modifies it and write it back to the main memory. The problem is that at least the L1 cache is not shared between CPUs so it can happen that one CPU does make changes to values which did change in meantime in the main memory. From the exception you can see we did increment the value 20 million times but half of the changes were lost because we did overwrite the already changed value from the other thread. This is a very common case and people do learn to protect their  data with proper locking.   void Intermediate() { var time = Stopwatch.StartNew(); Action acc = ThreadWorkMethod_Intermediate; var ar1 = acc.BeginInvoke(null, null); var ar2 = acc.BeginInvoke(null, null); ar1.AsyncWaitHandle.WaitOne(); ar2.AsyncWaitHandle.WaitOne(); if (Counter != 2 * Increments) throw new Exception(String.Format("Hmm {0:N0} != {1:N0}", Counter, 2 * Increments)); Console.WriteLine("Intermediate did take: {0:F1}s", time.Elapsed.TotalSeconds); } void ThreadWorkMethod_Intermediate() { for (int i = 0; i < Increments; i++) { lock (this) { Counter++; } } } This is better and does use the .NET Threadpool to get rid of manual thread management. It does give the expected result but it can result in deadlocks because you do lock on this. This is in general a bad idea since it can lead to deadlocks when other threads use your class instance as lock object. It is therefore recommended to create a private object as lock object to ensure that nobody else can lock your lock object. When you read more about threading you will read about lock free algorithms. They are nice and can improve performance quite a lot but you need to pay close attention to the CLR memory model. It does make quite weak guarantees in general but it can still work because your CPU architecture does give you more invariants than the CLR memory model. For a simple counter there is an easy lock free alternative present with the Interlocked class in .NET. As a general rule you should not try to write lock free algos since most likely you will fail to get it right on all CPU architectures. void Experienced() { var time = Stopwatch.StartNew(); Task t1 = Task.Factory.StartNew(ThreadWorkMethod_Experienced); Task t2 = Task.Factory.StartNew(ThreadWorkMethod_Experienced); t1.Wait(); t2.Wait(); if (Counter != 2 * Increments) throw new Exception(String.Format("Hmm {0:N0} != {1:N0}", Counter, 2 * Increments)); Console.WriteLine("Experienced did take: {0:F1}s", time.Elapsed.TotalSeconds); } void ThreadWorkMethod_Experienced() { for (int i = 0; i < Increments; i++) { Interlocked.Increment(ref Counter); } } Since time does move forward we do not use threads explicitly anymore but the much nicer Task abstraction which was introduced with .NET 4 at 2010. It is educational to look at the generated assembly code. The Interlocked.Increment method must be called which does wondrous things right? Lets see: lock inc dword ptr [eax] The first thing to note that there is no method call at all. Why? Because the JIT compiler does know very well about CPU intrinsic functions. Atomic operations which do lock the memory bus to prevent other processors to read stale values are such things. Second: This is the same increment call prefixed with a lock instruction. The only reason for the existence of the Interlocked class is that the JIT compiler can compile it to the matching CPU intrinsic functions which can not only increment by one but can also do an add, exchange and a combined compare and exchange operation. But be warned that the correct usage of its methods can be tricky. If you try to be clever and look a the generated IL code and try to reason about its efficiency you will fail. Only the generated machine code counts. Is this the best code we can write? Perhaps. It is nice and clean. But can we make it any faster? Lets see how good we are doing currently. Level Time in s IJustLearnedToUseThreads Flawed Code Intermediate 1,5 (lock) Experienced 0,3 (Interlocked.Increment) Master 0,1 (1,0 for int[2]) That lock free thing is really a nice thing. But if you read more about CPU cache, cache coherency, false sharing you can do even better. int[] Counters = new int[12]; // Cache line size is 64 bytes on my machine with an 8 way associative cache try for yourself e.g. 64 on more modern CPUs void Master() { var time = Stopwatch.StartNew(); Task t1 = Task.Factory.StartNew(ThreadWorkMethod_Master, 0); Task t2 = Task.Factory.StartNew(ThreadWorkMethod_Master, Counters.Length - 1); t1.Wait(); t2.Wait(); Counter = Counters[0] + Counters[Counters.Length - 1]; if (Counter != 2 * Increments) throw new Exception(String.Format("Hmm {0:N0} != {1:N0}", Counter, 2 * Increments)); Console.WriteLine("Master did take: {0:F1}s", time.Elapsed.TotalSeconds); } void ThreadWorkMethod_Master(object number) { int index = (int) number; for (int i = 0; i < Increments; i++) { Counters[index]++; } } The key insight here is to use for each core its own value. But if you simply use simply an integer array of two items, one for each core and add the items at the end you will be much slower than the lock free version (factor 3). Each CPU core has its own cache line size which is something in the range of 16-256 bytes. When you do access a value from one location the CPU does not only fetch one value from main memory but a complete cache line (e.g. 16 bytes). This means that you do not pay for the next 15 bytes when you access them. This can lead to dramatic performance improvements and non obvious code which is faster although it does have many more memory reads than another algorithm. So what have we done here? We have started with correct code but it was lacking knowledge how to use the .NET Base Class Libraries optimally. Then we did try to get fancy and used threads for the first time and failed. Our next try was better but it still had non obvious issues (lock object exposed to the outside). Knowledge has increased further and we have found a lock free version of our counter which is a nice and clean way which is a perfectly valid solution. The last example is only here to show you how you can get most out of threading by paying close attention to your used data structures and CPU cache coherency. Although we are working in a virtual execution environment in a high level language with automatic memory management it does pay off to know the details down to the assembly level. Only if you continue to learn and to dig deeper you can come up with solutions no one else was even considering. I have studied particle physics which does help at the digging deeper part. Have you ever tried to solve Quantum Chromodynamics equations? Compared to that the rest must be easy ;-). Although I am no longer working in the Science field I take pride in discovering non obvious things. This can be a very hard to find bug or a new way to restructure data to make something 10 times faster. Now I need to get some sleep ….

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  • UPDATE and INSERT differences in syntax is an inconvenience

    - by theband
    I was going through this article today. http://vinothbabu.com/2010/05/08/update-and-insert-differences-in-syntax-is-an-inconvenience/ I was not able to understand this part of the code written by the author. list($sets,$cols,$values)=escape_arr($sets); $insert_sql=”INSERT INTO `avatars` “.implode(’,',$cols).” VALUES(”.implode(’,',$values).”)”; $update_sql=”UPDATE `avatars` SET “.implode(’,',$sets).” WHERE userid=$userid LIMIT 1?; and finally the conclusion part of the article.

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  • Continuous Deployment with a C#/ASP.NET website?

    - by Amber Shah
    I have a website in C#/ASP.NET that is currently in development. When we are in production, I would like to do releases frequently over the course of the day, as we fix bugs and add features (like this: http://toni.org/2010/05/19/in-praise-of-continuous-deployment-the-wordpress-com-story/). If you upload a new version of the site or even change a single file, it kicks out the users that are currently logged in and makes them start over any forms and such. Is there a secret to being able to do deployments without interfering with users for .NET sites?

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  • Anyone able to translate sIFR into AS3 (for hyphenation and with the help of a converter)?

    - by Murat Bezel
    One thing asked for a lot with sIFR is hyphenation. Now I almost solved it with integrating Hyphenator.as http://vis4.net/blog/2010/05/as3-hyphenation/. The only problem is that Hyphenator.as is written in AcionScript 3, while sIFR is in ActionScript 2. I found an AS2 to AS3 converter www.5etdemi.com/blog/archives/2006/11/as2-to-as3-converter-createtextfield-geturl-handling/ but the result examples.bezel.be/sIFR-as3.as is not working yet. Anyone able to contribute to making hyphenation work in sIFR? (Sorry for the links, but weirdly I am only allowed to post one link. Really weird.)

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  • Why the same code in WPF is slower than in Windows Forms?

    - by Marco Bettiolo
    I made bunch of benchmarks of the framework 4.0 and older and I can't understand why the same code is slower when using WPF compared to Windows Forms: This is the code, it has nothing to do with the UI elements: Random rnd = new Random(845038); Int64 number = 0; for (int i = 0; i < 500000000; i++) { number += rnd.Next(); } The code takes 5968ms - 6024ms to execute in Windows Forms and 6953ms in WPF. Here is the post with the downloadable solution: http://blog.bettiolo.it/2010/04/benchmark-of-net-framework-40.html

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  • Silverlight Unit Testing Framework running tests in external class library

    - by Jonas Follesø
    I'm currently looking into different options for unit testing Silverlight applications. One of the frameworks available is the Silverlight Unit Test Framework from Microsoft (developed primary by Jeff Wilcox, http://www.jeff.wilcox.name/2010/05/sl3-utf-bits/). One of the scenarios I'm looking into is running the same tests on both Silverlight 3 (PC) and Windows Phone 7. The Silverlight Unit Test Framework (SLUT) runs on both PC and phone. To prevent having to copy or link files I would like to put my tests into a shared test library, that can be loaded by either a WP7 application using the SLUT, or a Silverlight 3 application using SLUT. So my question is: will SLUT load unit tests defined in a referenced class library, or only in the executing assembly?

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  • EXC_BAD_ACCESS at UITableView on IOS

    - by Suprie
    Hi all, When scrolling through table, my application crash and console said it was EXC_BAD_ACCESS. I've look everywhere, and people suggest me to use NSZombieEnabled on my executables environment variables. I've set NSZombieEnabled, NSDebugEnabled, MallocStackLogging and MallocStackLoggingNoCompact to YES on my executables. But apparently i still can't figure out which part of my program that cause EXC_BAD_ACCESS. This is what my console said [Session started at 2010-12-21 21:11:21 +0700.] GNU gdb 6.3.50-20050815 (Apple version gdb-1510) (Wed Sep 22 02:45:02 UTC 2010) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "x86_64-apple-darwin".sharedlibrary apply-load-rules all Attaching to process 9335. TwitterSearch(9335) malloc: recording malloc stacks to disk using standard recorder TwitterSearch(9335) malloc: process 9300 no longer exists, stack logs deleted from /tmp/stack-logs.9300.TwitterSearch.suirlR.index TwitterSearch(9335) malloc: stack logs being written into /tmp/stack- logs.9335.TwitterSearch.tQJAXk.index 2010-12-21 21:11:25.446 TwitterSearch[9335:207] View Did Load Program received signal: “EXC_BAD_ACCESS”. And this is when i tried to type backtrace on gdb : Program received signal: “EXC_BAD_ACCESS”. (gdb) backtrace #0 0x00f20a67 in objc_msgSend () #1 0x0565cd80 in ?? () #2 0x0033b7fa in -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:withIndexPath:] () #3 0x0033177f in -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:] () #4 0x00346450 in -[UITableView(_UITableViewPrivate) _updateVisibleCellsNow:] () #5 0x0033e538 in -[UITableView layoutSubviews] () #6 0x01ffc451 in -[CALayer layoutSublayers] () #7 0x01ffc17c in CALayerLayoutIfNeeded () #8 0x01ff537c in CA::Context::commit_transaction () #9 0x01ff50d0 in CA::Transaction::commit () #10 0x020257d5 in CA::Transaction::observer_callback () #11 0x00d9ffbb in __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ () #12 0x00d350e7 in __CFRunLoopDoObservers () #13 0x00cfdbd7 in __CFRunLoopRun () #14 0x00cfd240 in CFRunLoopRunSpecific () #15 0x00cfd161 in CFRunLoopRunInMode () #16 0x01a73268 in GSEventRunModal () #17 0x01a7332d in GSEventRun () #18 0x002d642e in UIApplicationMain () #19 0x00001d4e in main (argc=1, argv=0xbfffee34) at /Users/suprie/Documents/Projects/Self/cocoa/TwitterSearch/main.m:14 I really appreciate for any clue to help me debug my application. EDIT this is the Header file of table #import <UIKit/UIKit.h> @interface TwitterTableViewController : UITableViewController { NSMutableArray *twitters; } @property(nonatomic,retain) NSMutableArray *twitters; @end and the implementation file #import "TwitterTableViewController.h" @implementation TwitterTableViewController @synthesize twitters; #pragma mark - #pragma mark Table view data source - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // Return the number of sections. return 1; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { // Return the number of rows in the section. return [twitters count]; } - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return 90.0f; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { const NSInteger TAG_IMAGE_VIEW = 1001; const NSInteger TAG_TWEET_VIEW = 1002; const NSInteger TAG_FROM_VIEW = 1003; static NSString *CellIdentifier = @"Cell"; UIImageView *imageView; UILabel *tweet; UILabel *from; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; // Image imageView = [[[[UIImageView alloc] initWithFrame:CGRectMake(5.0f, 5.0f, 60.0f, 60.0f)] autorelease] retain]; [cell.contentView addSubview:imageView]; imageView.tag = TAG_IMAGE_VIEW; // Tweet tweet = [[[UILabel alloc] initWithFrame:CGRectMake(105.0f, 5.0f, 200.0f, 50.0f)] autorelease]; [cell.contentView addSubview:tweet]; tweet.tag = TAG_TWEET_VIEW; tweet.numberOfLines = 2; tweet.font = [UIFont fontWithName:@"Helvetica" size:12]; tweet.textColor = [UIColor blackColor]; tweet.backgroundColor = [UIColor clearColor]; // From from = [[[UILabel alloc] initWithFrame:CGRectMake(105.0f, 55.0, 200.0f, 35.0f)] autorelease]; [cell.contentView addSubview:from]; from.tag = TAG_FROM_VIEW; from.numberOfLines = 1; from.font = [UIFont fontWithName:@"Helvetica" size:10]; from.textColor = [UIColor blackColor]; from.backgroundColor = [UIColor clearColor]; } // Configure the cell... NSMutableDictionary *twitter = [twitters objectAtIndex:(NSInteger) indexPath.row]; // cell.text = [twitter objectForKey:@"text"]; tweet.text = (NSString *) [twitter objectForKey:@"text"]; tweet.hidden = NO; from.text = (NSString *) [twitter objectForKey:@"from_user"]; from.hidden = NO; NSString *avatar_url = (NSString *)[twitter objectForKey:@"profile_image_url"]; NSData * imageData = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString: avatar_url]]; imageView.image = [UIImage imageWithData: imageData]; imageView.hidden = NO; return cell; } #pragma mark - #pragma mark Table view delegate - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSMutableDictionary *twitter = [twitters objectAtIndex:(NSInteger)indexPath.row]; NSLog(@"Twit ini kepilih :%@", [twitter objectForKey:@"text"]); } #pragma mark - #pragma mark Memory management - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; } - (void)viewDidUnload { } - (void)dealloc { [super dealloc]; } @end

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  • How to get data type property values using SPARQL

    - by udayalkonline
    hey, I have created some sample ontology in protege.According to my ontology there is a class called person and which has sub class called Student.There are some student individuals(john,paul,marry,...). I have diffiend some data property called "email" and assigned their email addresses. Following query which is resulting all the individuals in ontology.But I want to get each individual and their email address. String queryStr = "PREFIX rdfs: http://www.w3.org/2000/01/rdf-schema# "+ "PREFIX rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# "+ "select ?ind "+ "where { "+ "?ind rdf:type http://www.semanticweb.org/ontologies/2010/5/Ontology1275975684120.owl#Student ;"+ "}\n "; Above query was tested on jena in eclipse IDE. any idea..? Thank in advance!

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  • List view and list adapters for displaying json

    - by Rahul Varma
    Hi, I am trying to display the text from json in a list view. I got help for retrieving the json text from the following... http://www.josecgomez.com/2010/04/30/android-accessing-restfull-web-services-using-json/comment-page-1/#comment-498.... But my problem is that i cant figure out how to display them in list view. I also want to get only some of the text from url(for example, alerttext and date). Can anyone help me in declaring the list adapter and list view in order to display the data in the way i want... Plzzzz...

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  • How to stop Javascript from showing default image and only text for link?

    - by tokyowp
    The Javascript below has a default image, but I would like display text "only text url" for this link instead of this button at this link http://developer.mixi.co.jp/wp-content/uploads/2010/09/bt_check_1.gif that this script defaults to. Is this possible? <div> <a href="http://mixi.jp/share.pl" class="mixi-check-button" data-key="some-data-key" data-url="http://someurl.com">only text url </a> <script type="text/javascript" src="http://static.mixi.jp/js/share.js"></script> </div>

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  • Visual Studio: How to override the default "Build Action" for certain extension types per project or solution?

    - by Lukasz Podolak
    I'm serving my asp.net mvc views from many assemblies and copying views to the main application on post-build event. This works, however, I realized, that when I change something in view and just hit F5, changes are not included. What I have to do to see changes is to: save, build<- explicitly clicking, and then hit F5. However, it's pretty annoying solution. I discovered that setting Build action to "Embedded Resource" on view solves the problem as well, however other devs may not remember that they have to do this after adding every view to the solution. Is there a way to override the default build action for certain file extensions, such as: *.aspx, *.ascx in project or (better) in solution ? What I've found is an ability to add this setting globally, per machine, but I do not want to do that (link: http://blog.andreloker.de/post/2010/07/02/Visual-Studio-default-build-action-for-non-default-file-types.aspx) Any ideas ?

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  • Bandwidth Limit Php Not working

    - by Saxtor
    Hey How are you doing guys, i am trying to limit bandwidth per users not by ipaddress for some reason my code doesnt work i need some help, what i am trying to do is to limit the download of the user that they would only have 10Gb per day to download however it seems to me that my buffer is not working when i use multiple connections it doesnt work, but when i use one connect it works 80% here is my code can you debug the error for me thanks. /** * @author saxtor if you can improve this code email me [email protected] * @copyright 2010 */ /** * CREATE TABLE IF NOT EXISTS `max_traffic` ( `id` int(255) NOT NULL AUTO_INCREMENT, `limit` int(255) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=0 ; */ //SQL Connection [this is hackable for testing] date_default_timezone_set("America/Guyana"); mysql_connect("localhost", "root", "") or die(mysql_error()); mysql_select_db("Quota") or die(mysql_error()); function quota($id) { $result = mysql_query("SELECT `limit` FROM max_traffic WHERE id='$id' ") or die(error_log(mysql_error()));; $row = mysql_fetch_array($result); return $row[0]; } function update_quota($id,$value) { $result = mysql_query("UPDATE `max_traffic` SET `limit`='$value' WHERE id='$id'") or die(mysql_error()); return $value; } if ( quota(1) != 0) $limit = quota(1); else $limit = 0; $multipart = false; //was a part of the file requested? (partial download) $range = $_SERVER["HTTP_RANGE"]; if ($range) { $cookie .= "\r\nRange: $range"; $multipart = true; header("X-UR-RANGE-Range: $range"); } $url = 'http://127.0.0.1/puppy.iso'; $filename = basename($url); //octet-stream + attachment => client always stores file header('Content-type: application/octet-stream'); header('Content-Disposition: attachment; filename="'.$filename.'"'); //always included so clients know this script supports resuming header("Accept-Ranges: bytes"); $user_agent = ini_get("user_agent"); ini_set("user_agent", $user_agent . "\r\nCookie: enc=$cookie"); $httphandle = fopen($url, "r"); $headers = stream_get_meta_data($httphandle); $size = $headers["wrapper_data"][6]; $sizer = explode(' ',$size); $size = $sizer[1]; //let's check the return header of rapidshare for range / length indicators //we'll just pass these to the client foreach ($headers["wrapper_data"] as $header) { $header = trim($header); if (substr(strtolower($header), 0, strlen("content-range")) == "content-range") { // _insert($range); header($header); header("X-RS-RANGE-" . $header); $multipart = true; //content-range indicates partial download } elseif (substr(strtolower($header), 0, strlen("Content-Length")) == "content-length") { // _insert($range); header($header); header("X-RS-CL-" . $header); } } if ($multipart) header('HTTP/1.1 206 Partial Content'); flush(); $speed = 4128; $packet = 1; //this is private dont touch. $bufsize = 128; //this is private dont touch/ $bandwidth = 0; //this is private dont touch. while (!(connection_aborted() || connection_status() == 1) && $size > 0) { while (!feof($httphandle) && $size > 0) { if ($limit <= 0 ) $size = 0; if ( $size < $bufsize && $size != 0 && $limit != 0) { echo fread($httphandle,$size); $bandwidth += $size; } else { if( $limit != 0) echo fread($httphandle,$bufsize); $bandwidth += $bufsize; } $size -= $bufsize; $limit -= $bufsize; flush(); if ($speed > 0 && ($bandwidth > $speed*$packet*103)) { usleep(100000); $packet++; //update_quota(1,$limit); } error_log(update_quota(1,$limit)); $limit = quota(1); //if( $size <= 0 ) // exit; } fclose($httphandle); } exit;

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